print(type(1))
print(type(1.1))
print(type("1.1"))
print(type(True))
print(type(False))
# list 列表类型
print(type([1, 2, 3]))
# tuple 元组类型
print(type((1, 2, 3)))
# set 集合类型
print(type({1, 2, 3}))
# dict 字典类型
print(type({1.1: 1, "b": 2}))

# 定义字典并取值
cache = {"a":1,"b":2}
print(cache.get("a"))
